147991067 has 4 divisors (see below), whose sum is σ = 169132656. Its totient is φ = 126849480.

The previous prime is 147991043. The next prime is 147991087. The reversal of 147991067 is 760199741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 760199741 = 7 ⋅108599963.

It is a cyclic number.

It is not a de Polignac number, because 147991067 - 2¹⁴ = 147974683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (147991087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10570784 + ... + 10570797.

It is an arithmetic number, because the mean of its divisors is an integer number (42283164).

Almost surely, 2^147991067 is an apocalyptic number.

147991067 is a deficient number, since it is larger than the sum of its proper divisors (21141589).

147991067 is an equidigital number, since it uses as much as digits as its factorization.

147991067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21141588.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 147991067 is about 12165.1579110178. The cubic root of 147991067 is about 528.9466047691.

The spelling of 147991067 in words is "one hundred forty-seven million, nine hundred ninety-one thousand, sixty-seven".